Rotary stamping press for bookbinders&#39; use



Jan. 26 1926.

. J. MURRAY ROTARY STAMPING PRESS FOR BOOKBINDBRS' USE Filed Jan. 4

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. J. MURRAY noun! swarms PRESS FOR BOOKBINDERS" USE 8 Sheets-Sheet -5- Filed Jan. 4, 1923 INVENTOR To/m Murray By H115" ATZorneys M AMJM Patented Jan. 26, 1926.

JOHN MUERAY, 0F LQNDON, ENGLANDI ROTARY STAMPING PRESS FOR BOOKBINDERS USE.

Application filed January 4, 1928.

To all "whom it may concern:

Be it known that I, JOHN MURRAY, aBritish subject, and a resident of London, England, have invented a certain new and useful Rotary Stamping Press for Bookbinders Use, of which the following is the specification.

The invention has for its object a simple and effective rotary press for stamping book covers and the like, in which means are provided for effectively feeding the covers oneby-one from the bottom of a pile to and through the stamping cylinders and for delivering them therefrom.

In a machine made according to the invention, there is a skeleton hopper adjustable for different sizes of covers and in which the covers are piled face up. The covers rest upon rails and are presented endwise to the stamping cylinders which are arranged one above the other with their axes horizontal.

In order that that soft or flexible part of the centre of the cover which finally forms the back of the book may be properly distended, and so that the whole cover may therefore register properly with the stamping cylinders, there are provided at the bottom of the hopper, two upstanding rails adapted to engage between the boards forming the opposite sides of the cover. One of these rails is fixed (but adjustable in position for different sizes of covers) and the other is laterally reciprocated by a cam so that while the cover is being delivered from the hopper, its centre part is distended by the engagement of the rails with the inner edges of the back boards.

The book covers are delivered from the hopper by pushers, which are attached to chains, which are driven normally at the same speed as the surface of the stamping cylinders. As the book covers move towards the cylinders, they are made to pass between two gripping feed rolls Whose surface speed is also equal to the surface of the stamping cylinders. As the book covers pass between the feed rollers, the feed rollers are held apart so that they allow the book cover to pass without being gripped until the book cover has been truly laid to the head lay gauge, which is attached to the under stamping or impression cylinder, around which the gauge is adjustable circumferentially. The head lay gauge would be set so that it would Serial H0. 619,671.

be slightly ahead of the book cover when the book cover was approaching the impression line. At this time the pushers conveying the book covers are given a slightly increased velocity, so that the book cover overtakes and is laid to the head lay gauge.

When this is accomplished, the gripping feed rollers grip and carry on the motion of the book cover at the same speed as the surface of the stamping cylinders. 7

Before the tail of the book cover passes through the front gripping feed rolls, the head of the book cover will have passed be yond the rear gripping feed rollers, when it will be gripped and carried through at the correct speed until the stamping is complete, when the book cover will be discharged to the delivery conveyor.

In order to obtain this increased velocity, the sprocket wheels carrying the chain are on spindles which are mounted on vertical levers pivoted on the framing of the machine and forming a parallel motion, the levers being rocked by a cam at the requisite time and one of the Sprocket wheel spindles being driven from gearing coaxial with the point of pivoting of the levers supporting that spindle.

The gripping rolls, driven in any convenient manner, are camoperated to seize the cover when it is presented between them by the pusher and to deliver it between the stamping cylinders.

The stamping cylinders may be of any convenient type for hot or for cold operation, and may be served and operated in any convenient manner.

The covers are delivered by the rear gripping feed rollers on to hook-like rods so formed and so adjustably positioned that the edges next the cylinders drop first. They, the covers, drop with these edges first onto a slow-running belt conveyor inclined downwards rearwardly.

Means are provided for the maintenance of a uniform depth of impression when the area under impression is nonuniform, and for the advancing and retiring of the impression surface in relation to one another.

An example of the carrying out of the invention isshown on seven accompanying sheets of drawings, in which Figure 1, Sheet 1., Figure 2, Sheet 2, and Figure 3, Sheet 3, are a side elevation, and an end elevation and a plan respectively, while Figures 4 and 5, Sheet 4, show a side elevation, Figures 6 and 7, Sheet 5, an end elevation of the distending and registering device, Figure 8, Sheet 6, and Figure 11, Sheet 1, being respectively a side elevation of the pusher gear and lowering device for same, and Figures 9 and 10, Sheet 7 a side elevation of the feed rollers mechanism, all to an increased scale. Fig. 12, Sheet 8, is a sectional side elevation on an enlarged scale of the stamping cylinders and some of the associated parts.

In the example shown, there are provided two side frames 1 and 2, which support between them two stamping cylinders 3, 4 and a table 5. Arranged between the side frames 1, 2, in a vertical position above the table 5, is a hopper 14 having side guides 15, 16 and front guides 17, 18. The side guides 15, 18 are fiXGCl to blocks 19, 20 which are slid-ably supported on guide rods 21, 22 carried by the side frames 1, 2, and are adjusted in a lateral direction for various sizes of book covers by the rotation of the right and left hand screw 23. The front guides 17, 18 slidably. supported in blocks 24, 25 are adjustable in a vertical direction only for varying thickness of book covers, by racks 26, 2? operated by pinions 28, 29 fixed on the guide rod 21 which is rotated by a worm 30 supported by the block 24 gearing with a worm wheel 31 connected to the rod 21.

At the lower end of the front guides 17, 18 are fixed horizontal holding down bars 32, 33, which project rearwards to the stamping cylinders 3, 4.

The bottom of the hopper 14 is formed by a plate 34, along the centre of which is a series of rectangular openings and near the sides two openings 3'7. l-lrranged imn'lediately underneath the plate 34, and shown more clearly in Figures 4 and 5, Sheet 4, and Figures 6 and 7, Sheet 5, are two upstanding rails 38, 39 which are provided with projections 40 which extend up through the openings for the purpose of ensuring the correct jalignn'ient of the book covers before delivery to the stamping cylinders 3, 4. The rail is connected to two rack bars 41, 42 which are free to slide in bosses on the underside of the table 5 and operated by pinions 43, 44 fired on a shaft 45 which prdects beyond the table at one end and has a square formed upon it for hand adjustment, the shaft being locked in position bV a clamping screw 46. i

The other rail 39 is connected to two rack bars 47, operated by pinions 49 50 carried by a shaft 51 which is rotated through the medium of a pinion 52 fixed upon it actuated by a forked rack 53 having roller working on a cam fixed on shaft 6 carried by the side frames 1, 2.

Mounted on the shaft 6 is a spur wheel '2' gearing with a spur wheel 8 rotating with the lower stamping cylinder 4. The rail 39 is laterally reciprocated into engagement with the inner edges of the book covers by the action of a spring 56, and moved out of engagement by means of the cam 55.

The covers are delivered from the hopper 14, as shown more clearly in Figure 8, Sheet 6, by pushers 57, 58, 59, attached to two chains 61, 2 working in the openings 36, 37 in the plate 34, on sprocket wheels 63, 64, (35, 6 carried on shafts 67, 68. The shaft 68 is driven by spur gear wheels of equal diameter 69, 70, 71 from a shaft 72 which in turn is driven by a spur pinion 78 gearing with a spur wheel 74 mounted on the shaft 6. the gearing being so arranged that the peripheral speed of the chain is the same as that of the stamping cylinders 3, 4. The shafts 67, 68, 72 are suported by two side bars T6 on which are arranged two guide rails 77, T8 supporting the upper portions of the chains 61, 62.

The bars 75, 76 are carried by four levers 79, 80, 81, 82, the levers 79, 80 being pivoted on the shaft 6 and the levers 81, 82 being pivoted on a shaft 11 supported by the table 5. The levers 81 and 82 may be oscillated by a forked link 83 hearing a roller 84 working in a face cam 85 rotated by the shaft 6 the forked link 88 passing through an eyebolt 86 fixed to the levers 81, 82 through the medium of balanced springs Q) On the shaft 11 is fixed a quadrant 89 gearing with a pinion 90 secured to one end of a spindle 91 carried by a boss 92 on the side of the table 5 (as shown in Figure 1, Sheet 1). At the other end of the spindle 91 is secured a lever 93 hearing at its upper end a hand lever 94, connected by a link to a pawl 96 which bears upon a notched quadrant 97 secured to the side of the table 5, through the action of a helical tension spring 98 connected at one end to a pin 99 integral with the pawl 96 and at the other end to a pin 100 fixed to the table 5. By depressing the hand lever 9-4 the pawl 96 is raised and is now free to travel over the quadrant to the last notch 101 into which the pawl 97 drops through the action of the spring),- 98 as soon as the hand lever 94 is released.

The rotation of the pinion 9O acting on the quadrant 89 causes the shaft 11 to rotate, causing the levers 81, 82 attached to it, and the levers 79, 8O pivoted on the shaft (3 to move through a certain angle so lowering the chains 61, 62 below the level of the plate 34, thus stopping the feeding of the bool-r covers by the pushers 57, 58, 59, 60.

On the shaft 6 is fixed an arm 12 carrying a worm 9 in gear with a worm wheel 10 connected to the spur Wheel 74 turning freely on the shaft 6. The rotation of the worm 9 by hand causes the worm wheel 10, spur gears 74, 73, 71, and 69 and the sprocket chain wheels 63, 64, and 66 to rotate and so 'move the chains 61, 62 backwards or for wards. The pushers 57, 58, 59 and 60 will therefore be advanced or retarded relative to a given position of the shaft 6.

Beyond the holding down bars 32, 33 is a pair of gripping feed rollers 102, 103 (shown more clearly in Figures 9 and 10, Sheet 7 The upper feed roll 102 is car ried at one end by a doubleended lever 104 and at the other end by a plain lever 105 both levers pivoting on a. shaft 106 carried by the side frames 1, 2. The lever 104 is moved and the roll 102 raised out of contact with the book cover by the action of a forked rod 107 bearing a roller 108 actuated by a cam 109 fixed on the shaft 6 through the medium of a helical spring 110. The lower roll 103 is carried at its ends by plain levers 111, 112 pivoting on a shaft 113 placed innnediately below the shaft 106 and driving it by equal gear Wheels 114, 115. The feed rollers 102, 103 are fitted at one end with spur pinions 116, 117 gearing with larger pinions 118, 119, the latter driven by a spur wheel 13 secured to andturning with the lower stamping cylinder 4. The gears are so proportioned as to impart a periph eral velocity to the feed rollers 102, 103 equal to that of the stamping cylinders.

On the lower stamping cylinder 4 is arranged a head lay gauge 120 supported at the ends by a segmental rack 121 and corresponding rack on the other side of the machine and adjustable circumferentially by means of a pinion 123 and a corresponding pinion on the other side of the machine. This pinion 123 and its mate are fixed upon a shaft 125 supported in the ends of the cylinder 4 and hearing at one end a worm wheel 126 in gear with a worm 127 carried by a bracket 128 fixed to the end of the cylinder.

If desired, a similar gauge 129 may be arranged on the cylinder at a point diametrically opposite the gauge 120.

As it is desirable that the lay gauge 120 should be in advance of the leading edge of the cover to prevent possible injury to the cover, the latter is advanced at an increased velocity and laid to the gauge in the following manner. The levers 79, 80, 81, 82 which support the chains 61, 62 can be oscillated on the shafts 6, 11 by the cam which actuates the rod 83 passing through the eyebolt 86 fixed between the levers 81, 82 and transmits the motion through the medium of the balanced springs 87, 88.

This movement is therefore not positive and the cover is thrust against the gauge 120 by a force equal to the strength of the springs.

After the book cover has passed through the stamping cylinders it is gripped by the rear gripping feed rollers 130,131 and later by the rollers 132, 133. The rollers 130, 13 are carried at their ends by double ended lGVOlS 134, 135 pivoted on a shaft 136, while the rollers 131, 133 are similarly supported by levers 37, 138 and shaft 139. The lever 135 is provided with a projection 140 car-1 ving an eyebolt through which passes a forked rod 141. bearing a roller 142 actuated by a cam 143 fixed on the shaft 6. The motion of the rod 141 is transmitted to the lever 135 through the medium of balanced helical springs 144, The shafts 136, 139 are operatively connected by spur gears 146, 14-7 and are drivenby the spur wheel 13 and the rollers 130, 132 are fitted on one end with spur pinions 148, 149 in gear with a larger pinion 150 while the rollers 131, 133 have pinions 151, 152 in gear with a larger pinion 153. Like the feed rollers, the rear gripping rollers are given a peripheral velpcity equal to that of the stamping cylinc ers.

Attached to the side frame 2 is a bracket 1.54 which supports at its outer end, from a. pin 155, a hanging bracket 156 carrying at its lower end a shaft 157 on which are fixed sprocket wheels 158, 159. Two similar sprocket wheels 160, 161 are fixed on a shaft 162 supported by the frames 1, 2. The sprocket wheels 158, 159, 160, 161 support chains 163, 164 to which is attached a series of wood slats 165. The chains 163, 164 are supported on guide bars 166, 167 which are carried by two cross-bars 168, 169 supported in turn by the side frames 170, 171 arranged between the shafts 157, 162. The shaft 162 is driven at a slow speed by an epicyclicgearing 172, 173, 174, 175, 176, operated by the spur wheel 8 integral with the lower stamping cylinder 4.

A rail 177 with the upper edge arranged as a rack 178 is attached to the bracket 154 and carries upon it a travelling carriage 179 which may he moved by turning a handwheel 180 operating a spur pinion 181 gearing with the rack 178.

The carriage 179 supports a bar 182 provided with a series of holes 183 in which are fitted two stops 184, 185, two supports 186, 187 and two side guides 188, 189. Supported by the shaft 139 are two bars 190, 191 pendant from 139.

The cycle of operation of the machine is as follows :The book covers are piled upon the table 5, the surface to be operated on being upwards in the hopper 14. The side guides 15, 16 give the approximate side-wise position, and are adjustable for different sizes of books, while the front guides are adjustable for different thicknesses of same. The pushers 57 58, 59, 60 approach the lowest book cover and move it towards the stamping cylinders 3, 4. During this movement the rails 38, 39 bearing against the inner edges of the cover, ensure correct alignment. As the leading edge of the cover approaches the head lay gauge 120 approximate to the position as shown in Fig ure 8, the cam 85 will advance the edge of the cover on to the lay gauge 120 and maintain it there until the cover reaches the vertical line through the centre of the stamping cylinders 3, 4 when the feed rollers 102, 103 will close upon the cover and carry it on at the correct peripheral speed of the cylinders. lVlien the design being impressed is continuous, the cylinders will take control of the cover, but the feed rollers will carry on the cover at its correct speed if the design is an interrupted one.

The feed rollers 102, 103 will maintain their grip of the cover until the leading edge has been passed between the feed rollers 130, 131 which are actuated by the cam 143, and the latter will then close on the cover. The feed rollers 102, 103 will now release their grip. The rollers 130, 131 will maintain their grip until the following end of the cover has passed beyond the vertical centre line, when the feed rollers 132, 133 will close and maintain their grip on the cover until it is discharged. The pushers and the periphery of the stamping cylinders can be 50- arranged as to take two book covers per revolution of the machine.

The book cover on issuing from the delivery rollers will strike with its leading edge the stops 184, 185 and will rest on the supports 186, 187 being guided sideways by the guides 188, 189 while gravity will be free to act on the following end of the cover which will be guided downwards in its fall by the bars 190, 191 until the leading end of the cover is clear of the supports 186, 187. The cover will then fall in a sloping position on the slats 165 of the conveyor.

What I claim is 1. In a rotary stamping press for bookbinders use; in combination, means for receiving book covers of different sizes and thicknesses and for permitting their discharge singly, means for moving the covers towards the stamping cylinders, means for aligning the moving covers, means for feeding the covers into the stamping cylinders, means for registering the covers on the impression cylinder, and means for finally moving the covers from the stamping cylinders and for delivering them in a finished condition.

2. In a rotary stamping press for bookbinders use; means for receiving book covers of different sizes and thicknesses and for permitting their discharge singly, in combination with means for moving the covers comprising moving chains fitted with pushers driven by sprocket wheels and shafts supported on oscillating levers which are adapted to be moved through an angle to adjust the pushers to various thicknesses of covers or to lower them out of action.

3. In mechanism forming the subject-matter of claim 2 hereof, means for advancing or retarding the positions of the pushers on the chains relative to the hopper, as and for the purposes set forth.

4. In mechanism forming the subject-matter of claim 2 hereof, means for advancing or retarding the positions of the pushers on the chains relative to the hopper, consisting of a worm supported by a bracket fixed to a driving shaft and a worm wheel integral with the first wheel of the gear train driving the chains and turning freely on the shaft.

5. In mechanism forming the subject-matter of claim 2 hereof, means for giving to the chains and pushers an increased velocity during a portion of their travel, as set forth.

6. In mechanism forming the subject-matter of claim 2 hereof, means for giving to the chains and pushers an icreased velocity during a portion of their travel, consisting of a cam on the driving shaft operatively connected to the oscillating levers through the medium of opposed springs.

7. In the mechanism forming the subjectmatter of claim 1 hereof, means for aligning the moving covers, consisting of two upstanding rails, and means for operating the rails laterally and reciprocally to one another while the covers are moving.

8. In the mechanism forming the subject matter of claim 1 hereof, means for aligning the moving covers consisting of two upstanding rails, racks connecting said rails, pinions operating said racks, shafts on which said pinions are mounted, a pinion and rack rotating one of said shafts and acam adapted to actuate said pinion and rack, said means being adapted for operating the rails laterally and reciprocally to one another while the covers are moving.

9. In the mechanism forming the subjectmatter of claim 1 hereof, means for feeding the covers into the stamping cylinders, consisting of two horizontal feed rollers driven through gearing at the same peripheral speed as the cylinders, levers supporting the ends of the rollers pivotally supported on operating shafts, and means for raising and lowering the upper roller.

10. In the mechanism forming the subject-matter of claim 1 hereof, means for registering the cover on the impression cylinder consisting of a bar adjustable circumferentially, as set forth.

11. In the mechanism forming the subject-matter of claim 1 hereof, means for finally moving the covers from the stamping cylinders and delivering them in a finished condition consisting of a pair of rollers and a second pair of rollers all driven througn gearing at the same peripheral speed as the forth.

cylinders, the rollers supported at their sisting of a set of deflecting stops and guides ends by rocking levers pivotally supported supported on an adjustabl bar, and a con- 1 on operating shafts and means for receivveyor driven at a, low speed by an epicyclic ing and lowering the upper rollers, as set gearing.

I In testimony whereof I have signed my 12. In the mechanism forming the subjectname to this specification.

matter of claim 1 hereof, means for delivering the covers in a finished condition con- JOHN MURRAY. 

